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    <title xmlns:xlink="http://www.w3.org/1999/xlink">eglSwapInterval - EGL Reference Pages</title>
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    <div class="refentry" id="eglSwapInterval">
      <div class="titlepage"/>
      <div class="refnamediv">
        <h2>Name</h2>
        <p>eglSwapInterval — 
            specifies the minimum number of video frame periods
            per buffer swap for the window associated with the current context.
        </p>
      </div>
      <div class="refsynopsisdiv">
        <h2>C Specification</h2>
        <div class="funcsynopsis">
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">EGLBoolean <strong class="fsfunc">eglSwapInterval</strong>(</code>
              </td>
              <td>EGLDisplay <var class="pdparam">display</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>EGLint <var class="pdparam">interval</var><code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
        </div>
      </div>
      <div class="refsect1" id="parameters">
        <h2>Parameters</h2>
        <div class="variablelist">
          <dl class="variablelist">
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>display</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                        Specifies the EGL display connection.
                    </p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>interval</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                        Specifies the minimum number of video frames that are displayed before
                        a buffer swap will occur.
                    </p>
            </dd>
          </dl>
        </div>
      </div>
      <div class="refsect1" id="description">
        <h2>Description</h2>
        <p>
            The interval takes effect when <a class="citerefentry" href="eglSwapBuffers.xhtml"><span class="citerefentry"><span class="refentrytitle">eglSwapBuffers</span></span></a> is
            first called subsequent to the <code class="function">eglSwapInterval</code> call.
        </p>
        <p>
            The <em class="parameter"><code>interval</code></em> specified by the function applies to the draw surface
            bound to the context that is current on the calling thread.
        </p>
        <p>
            If <em class="parameter"><code>interval</code></em> is set to a value of <code class="constant">0</code>, buffer swaps are not synchronized to a
            video frame, and the swap happens as soon as the render is complete. interval
            is silently clamped to minimum and maximum implementation dependent
            valuesbefore being stored; these values are defined by <span class="type">EGLConfig</span> attributes
            <code class="constant">EGL_MIN_SWAP_INTERVAL</code> and <code class="constant">EGL_MAX_SWAP_INTERVAL</code> respectively.
        </p>
      </div>
      <div class="refsect1" id="notes">
        <h2>Notes</h2>
        <p>
            The swap interval has no effect on <a class="citerefentry" href="eglCopyBuffers.xhtml"><span class="citerefentry"><span class="refentrytitle">eglCopyBuffers</span></span></a>.
        </p>
        <p>
            The default swap interval is 1.
        </p>
      </div>
      <div class="refsect1" id="errors">
        <h2>Errors</h2>
        <p>
            <code class="constant">EGL_FALSE</code> is returned on failure, <code class="constant">EGL_TRUE</code> otherwise.
        </p>
        <p>
            <code class="constant">EGL_BAD_CONTEXT</code> is generated if there is no current context
            on the calling thread.
        </p>
        <p>
            <code class="constant">EGL_BAD_SURFACE</code> is generated if there is no surface
            bound to the current context.
        </p>
      </div>
      <div class="refsect1" id="seealso">
        <h2>See Also</h2>
        <p>
            <a class="citerefentry" href="eglSwapBuffers.xhtml"><span class="citerefentry"><span class="refentrytitle">eglSwapBuffers</span></span></a>
        </p>
      </div>
      <p>
    </p>
      <div class="refsect3" id="copyright">
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        <p>
            Copyright © 2003-2014 The Khronos Group Inc.
            Permission is hereby granted, free of charge, to any person obtaining a
            copy of this software and/or associated documentation files (the
            "Materials"), to deal in the Materials without restriction, including
            without limitation the rights to use, copy, modify, merge, publish,
            distribute, sublicense, and/or sell copies of the Materials, and to
            permit persons to whom the Materials are furnished to do so, subject to
            the condition that this copyright notice and permission notice shall be included
            in all copies or substantial portions of the Materials.
        </p>
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